Case #350 — Tudor Black Bay GMT “Pepsi” Ref. 79830RB

Case #350 — Tudor Black Bay GMT “Pepsi” Ref. 79830RB

Status: Active Investigation
Condition: Excellent Pre-Owned
Scope: Box, Papers, and Cards
Year: 2024

🔎 Case Notes

The Tudor Black Bay GMT Ref. 79830RB is one of the strongest modern travel watches in Tudor’s lineup — a reference that takes the brand’s now-familiar Black Bay design language and gives it true GMT functionality with the classic burgundy-and-blue bezel that earned it the “Pepsi” nickname. At 41mm, it has enough substance to feel like a proper sport watch, but the proportions remain balanced enough for daily wear. Tudor lists the bracelet version as M79830RB-0001, with a 41mm steel case, domed black dial, domed sapphire crystal, MT5652 COSC manufacture movement, and 200m water resistance.

What makes this reference especially appealing is that it offers real travel utility without giving up the visual identity that made the Black Bay line so successful in the first place. The bidirectional 24-hour bezel, independently adjustable local hour hand, and strong bracelet execution make it practical, while the red-and-blue bezel keeps it immediately recognizable on the wrist. Tudor also lists an approximate 70-hour power reserve and a five-year transferable guarantee for the current bracelet reference.

This example dates to 2024 and is presented in excellent pre-owned condition. Overall, it shows only light wear consistent with careful use. It includes box, papers, and cards and is currently sized to fit approximately a 7.5-inch wrist.

🕰️ The Evidence

Reference: 79830RB / M79830RB-0001
Model: Tudor Black Bay GMT “Pepsi”
Case: Stainless Steel
Case Size: 41 mm
Bezel: Bidirectional steel bezel with 24-hour graduated anodized aluminum disc in matte burgundy and blue
Crystal: Domed Sapphire Crystal
Dial: Black, domed
Movement: Tudor Manufacture Calibre MT5652 (COSC) Automatic
Bracelet: Riveted Stainless Steel Bracelet
Bracelet Fit: Approximately 7.5" wrist
Water Resistance: 200 m
Year: 2024
Accessories: Box, Papers, and Cards

Condition Notes: Excellent pre-owned condition overall, with light wear consistent with careful use.

🌍 GMT Heritage

The Black Bay GMT takes Tudor’s vintage-inspired dive-watch language and adapts it for travel use, combining the collection’s familiar snowflake hands, domed dial, and rotating bezel format with a true GMT movement built around the in-house MT5652. The result is a watch that still feels unmistakably like a Black Bay, but with the added practicality of tracking multiple time zones.

That matters because the watch does not feel like a compromise between categories. It feels fully resolved — equally at home as a daily sports watch or as a travel piece. The red-and-blue bezel gives it one of the most recognizable looks in Tudor’s current range, while the black dial keeps it grounded and versatile.

🌟 Collector Provenance

The Black Bay GMT has built a strong following because it offers a lot of what buyers want in a modern GMT: in-house movement, useful travel function, strong bracelet design, and a look that is distinctive without feeling trend-driven. It remains one of Tudor’s most recognizable modern sport references, and examples with box, papers, and cards are highly desirable in the market. 

For a 2024 example in excellent pre-owned condition, the appeal is straightforward: it is a familiar, proven reference with broad buyer recognition and strong everyday usefulness. The 7.5-inch bracelet fit also keeps it in an easy, wearable range for many buyers.

🌟 Celebrity Provenance

The Black Bay family has become one of the most recognizable pillars of Tudor’s modern identity, and the GMT line broadened that appeal by bringing true travel-watch functionality into the collection. The standard black-dial “Pepsi” version remains the classic modern expression of that formula — practical, distinctive, and instantly recognizable.

🧾 From the Case File

“Recovered as a 2024 Tudor Black Bay GMT ‘Pepsi’ Ref. 79830RB. Box, papers, and cards. Excellent pre-owned condition overall. Sized to approximately a 7.5-inch wrist.”

🗝️ BST Verdict

Case #350 delivers one of Tudor’s most compelling modern sport-watch references in its classic GMT configuration. With box, papers, and cards, a versatile 41mm case, and broad collector recognition, this is a very attractive example of the Black Bay GMT “Pepsi.”

👉 Every case deserves a closer look.